224545513 has 4 divisors (see below), whose sum is σ = 224578900. Its totient is φ = 224512128.

The previous prime is 224545511. The next prime is 224545547. The reversal of 224545513 is 315545422.

224545513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 170772624 + 53772889 = 13068^2 + 7333^2 .

It is a cyclic number.

It is not a de Polignac number, because 224545513 - 2¹ = 224545511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224545511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2688 + ... + 21361.

It is an arithmetic number, because the mean of its divisors is an integer number (56144725).

Almost surely, 2^224545513 is an apocalyptic number.

It is an amenable number.

224545513 is a deficient number, since it is larger than the sum of its proper divisors (33387).

224545513 is an equidigital number, since it uses as much as digits as its factorization.

224545513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33386.

The product of its digits is 24000, while the sum is 31.

The square root of 224545513 is about 14984.8427752846. The cubic root of 224545513 is about 607.8104002892.

Subtracting 224545513 from its reverse (315545422), we obtain a palindrome (90999909).

The spelling of 224545513 in words is "two hundred twenty-four million, five hundred forty-five thousand, five hundred thirteen".